Extended Release Fragrance Compositions

ABSTRACT

Compositions are provided that provide release of fragrance over an extended period of time. The compositions comprise a hydrophilically-modified cross-linked silicone elastomer and an acrylic rheology modifier.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of and claims priority to U.S.Nonprovisional patent application Ser. No. 15/635,287 filed Jun. 28,2017 and U.S. Nonprovisional patent application Ser. No. 14/547,439filed Nov. 19, 2014, granted U.S. Pat. No. 9,717,237 on Aug. 1, 2017 andU.S. Nonprovisional patent application Ser. No. 14/165,687 filed Jan.28, 2014, U.S. Pat. No. 8,921,303 granted Dec. 30, 2014, which arehereby fully incorporated by reference in its entirety for all purposes.

FIELD OF INVENTION

The invention relates generally to compositions comprising ahydrophilically-modified cross-linked silicone elastomer and an acrylicrheology modifier which provide release of fragrance over an extendedperiod of time.

BACKGROUND OF THE INVENTION

It is well known in the fragrance arts that scents deposited on surfacessuch as keratinous surfaces of the body, lose intensity over time. Manyattempts have therefore been made to increase the amount of time thatfragrances remain on such surfaces without increasing fragrance load.For example, those in the field have attempted to increase fragranceretention time through the use of various coatings andmicroencapsulation systems. (See, e.g., U.S. Pat. Nos. 7,294,612;6,932,982; and 5,176,903; each of which is hereby incorporated byreference in its entirety). Despite these techniques, there is anongoing need in the art for improved compositions that can extend theduration of fragrance release without necessarily increasing the amountof fragrance used.

It is therefore an object of the invention to provide compositions thatprovide extended release of fragrance, and to provide methods thatprovide prolonged delivery of a fragrance from a surface, such as ahuman integument.

The foregoing discussion is presented solely to provide a betterunderstanding of nature of the problems confronting the art and shouldnot be construed in any way as an admission as to prior art nor shouldthe citation of any reference herein be construed as an admission thatsuch reference constitutes “prior art” to the instant application.

SUMMARY OF THE INVENTION

In accordance with the foregoing objectives and others, compositions areprovided that release fragrance over an extended period of time. It hassurprisingly been found that compositions comprising a combination of ahydrophilically-modified cross-linked silicone elastomer and an acrylicrheology modifier, can provide a synergistic improvement in theretention of a fragrance oil such that fragrance is released over alonger period of time.

The compositions are typically in the form of a clear or translucentgel. The compositions may comprise from about 0.5% to about 5% by weightof a hydrophilically-modified cross-linked silicone elastomer, such asthose comprising poly(alkylene oxide) chains grafted to a siliconebackbone (e.g., PEG-12 dimethicone/PPG-20 crosspolymer), and from about0.5% to about 5% by weight of an acrylic rheology modifier, such ascopolymers of an acrylate monomer and an acrylamide monomer (e.g.,hydroxyethyl acrylate/sodium acryloyldimethyltaurate copolymer). Theweight ratio of the hydrophilically-modified cross-linked siliconeelastomer and the acrylic rheology modifier will typically range fromabout 10:1 to about 1:10, more typically from about 2:1 to about 1:2(e.g., about 1:1). In addition, the compositions may comprise a polyol(e.g., glycerin), for example, in an amount from about 35% to about 50%by weight, and an alcohol (e.g., ethanol), for example in an amount fromabout 35% to about 50% by weight. The compositions also comprise afragrance oil (or blend of fragrance oils) which will typically comprisefrom about 0.5% to about 25% by weight of the composition, moretypically from about 2% to about 10% by weight of the composition (e.g.,about 5% by weight of the composition). The compositions optionallycomprise one or more actives, such as, for example, retinoids, hydroxylacids, depigmenting agents, botanicals, collagenase inhibitors, elastaseinhibitors, sunscreens, anti-perspirants, deodorants, anti-bacterials,and anti-fungals. The compositions may be either hydrous or anhydrous.The compositions may also optionally comprise one or more colorants(e.g., pigments, lakes, dyes, etc.). The compositions of the inventionare capable of releasing the fragrance oil over a longer period of timeas compared to otherwise identical compositions that lack either thehydrophilically-modified cross-linked silicone elastomer or the acrylicrheology modifier. The combination of the hydrophilically-modifiedcross-linked silicone elastomer and the acrylic rheology modifier mayresult in a synergistic improvement in the duration of release of afragrance oil from the compositions. The fragrance oil may be an oilthat is used for primarily aesthetic benefits (e.g., a perfume) or mayhave functional benefits (e.g., an insect repellant such as citronellaoil). Also provided are methods for providing prolonged delivery of afragrance oil, comprising applying to a surface (e.g., a humanintegument such as skin of the face or body), a composition of theinvention.

These and other aspects of the present invention will become apparent tothose skilled in the art after a reading of the following detaileddescription of the invention, including the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows the results of an experiment assessing fragrance retentiontime for several different fragrance compositions over a 24 hour period,as determined by gas chromatography analysis of headspace.

DETAILED DESCRIPTION

All amounts provided in terms of weight percentage are relative to theentire composition unless otherwise stated. It will be understood thatthe total of all weight percentages in a given composition will notexceed 100%.

The present invention is founded on the discovery that compositionscomprising combinations of hydrophilically-modified cross-linkedsilicone elastomers and acrylic rheology modifiers provide an unexpectedimprovement (preferably, a synergistic improvement) in the duration ofrelease of a fragrance oil from the compositions. By “synergisticimprovement” is meant that a composition comprising a combination of ahydrophilically-modified cross-linked silicone elastomer and an acrylicrheology modifier, results in a duration of fragrance oil release thatis greater than the additive effect that the same two componentsseparately have on the duration of fragrance oil release.

The compositions of the invention comprise a hydrophilically-modifiedcross-linked silicone elastomer in an amount from about 0.1% to about25% by weight, or from about 0.2% to about 20% by weight, or from about0.3% to about 15% by weight of the composition. More typically, thecompositions comprise a hydrophilically-modified cross-linked siliconeelastomer in an amount from about 0.5% to about 10%, from about 0.5% toabout 5%, or from about 1% to about 3% by weight of the composition. Inone preferred embodiment, the hydrophilically-modified cross-linkedsilicone elastomer comprises about 1.5% by weight of the composition.

Suitable hydrophilically-modified cross-linked silicone elastomers arepreferably capable of forming a gel with a polyol and/or alcohol. Suchelastomers may comprise poly(alkylene oxide) chains grafted to asilicone backbone. In one preferred embodiment, thehydrophilically-modified cross-linked silicone elastomer comprisesPEG-12 dimethicone/PPG-20 crosspolymer.

Other suitable hydrophilically-modified cross-linked silicone elastomersinclude those described in U.S. Patent Application Publication No.2013/0005832, hereby incorporated by reference in its entirety. Forexample, suitable polyoxyalkylenated silicone elastomers include thosesold by Shin-Etsu as “KSG-21,” “KSG-20,” “KSG-3,” “KSG-31,” “KSG-32,”“KSG-33,” “KSG-210,” “KSG-310,” “KSG-320,” “KSG-330,” “KSG-340,” and“X-226146,” and those sold by Dow Corning as “DC9010” and “DC9011.”Other useful hydrophilically-modified cross-linked silicone elastomersinclude those described in U.S. Pat. Nos. 5,236,986; 5,412,004;5,837,793; and 5,811,487, the content of each of which is herebyincorporated by reference in its entirety.

Additional suitable hydrophilically-modified cross-linked siliconeelastomers include those described in U.S. Patent ApplicationPublication No. 2005/0220728, hereby incorporated by reference in itsentirety. For example, suitable polyglycerolated silicone elastomersinclude those sold by Shin-Etsu as “KSG-710,” “KSG-810,” “KSG-820,”“KSG-830,” and “KSG-840.”

Additional suitable hydrophilically-modified cross-linked siliconeelastomers include those described in U.S. Pat. No. 6,524,598, herebyincorporated by reference in its entirety.

The compositions of the invention comprise an acrylic rheology modifierin an amount from about 0.1% to about 25% by weight, or from about 0.2%to about 20% by weight, or from about 0.3% to about 15% by weight of thecomposition. More typically, the compositions comprise an acrylicrheology modifier in an amount from about 0.2% to about 10%, from about0.5% to about 5%, or from about 1% to about 3% by weight of thecomposition. In one preferred embodiment, the acrylic rheology modifiercomprises about 1.5% by weight of the composition.

Suitable acrylic rheology modifiers are preferably those that arecapable of forming a gel with a suitable solvent such as a polyol and/oran alcohol. Such acrylic rheology modifiers will include homo andcopolymers of acrylic or acrylate monomers. In one embodiment, theacrylic rheology modifier comprises copolymers of an acrylate monomerand an acrylamide monomer. In one preferred embodiment, the acrylicrheology modifier comprises hydroxyethyl acrylate/sodiumacryloyldimethyltaurate copolymer.

Other useful acrylic rheology modifiers include those described in U.S.Patent Application Publication No. 2013/0130959, hereby incorporated byreference in its entirety. For example, these include ViscUp® EZ (INCIname Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer &Hydrogenated Polydecene & Sorbitan Laurate & Trideceth-6) marketed byArch Personal Care Products; and those sold by SEPPIC as Sepiplus S(hydroxyethyl acrylate sodium acryloyldimethyl taurate copolymer andpolyisobutene and PEG-7 trimethyloylpropane coconut ether); Sepinov EMT10 (hydroxyethyl acrylate sodium acryloyldimethyl taurate copolymer);and Simulgel 600 (acrylamide/sodium acryloyldimethyltauratecopolymer/isohexadecane/polysorbate 80).

Additional suitable acrylic rheology modifiers include the anionicthickeners described in U.S. Patent Application Publication No.2208/0196174, incorporated by reference herein in its entirety. Theseinclude, without limitation, those comprising 2-acrylamido-2-methylpropane sulfonic acid monomers. The thickeners described in U.S. PatentApplication Publication No. 2004/0028637, hereby incorporated byreference in its entirety, are also contemplated to be useful.

Other useful acrylic rheology modifiers include those described in U.S.Pat. No. 6,524,598, hereby incorporated by reference in its entirety.For example, these include those sold by B.F. Goodrich Co. as Carbopol934, Carbopol 940, Carbopol 950, Carbopol 980, Carbopol 951, Carbopol981, Carbopol Ultrez 10, Carbopol ETD2020, Carbopol 1382, and Carbopol1342, as well as Pemulen TR-1, sold by Lubrizol.

In one embodiment, the composition is in the form of a gel that isformed by the hydrophilically-modified cross-linked silicone elastomer,acrylic rheology modifier, polyol, and alcohol.

In one embodiment, the composition is free of additional gelling agentsother than the hydrophilically-modified cross-linked silicone elastomerand the acrylic rheology modifier. In another embodiment, thecomposition may comprise additional gelling agents, but in amountsinsufficient to form a gel in the absence of thehydrophilically-modified cross-linked silicone elastomer and acrylicrheology modifier.

In some embodiments, additional gelling agents or rheology modifiers, ifpresent, will be included at a level of less than about 0.5% by weightor less than about 0.1% by weight of the total composition. In anotherembodiment, the composition is substantially free of additional gellingagents or rheology modifiers, by which is meant that any additionalgelling agents of rheology modifiers when present, are at levels so lowthat they do not measurably impart viscosity or structure to thecomposition.

The compositions may be anhydrous, substantially anhydrous, or maycomprise water. By “substantially anhydrous” is meant that no water isintentionally added to the composition, and only those amounts of watertypically associated with the raw ingredients (e.g., due to thehygroscopic nature of glycerin and alcohol) are included. In someembodiments, the compositions will comprise less than about 5% by weightwater, or less than about 2% by weight water, or less than about 1% byweight water, or less than about 0.5% by weight water.

The weight ratio of the hydrophilically-modified cross-linked siliconeelastomer and the acrylic rheology modifier will typically range fromabout 10:1 to about 1:10, or from about 8:1 to about 1:8, or from about5:1 to about 1:5, and more typically from about 2:1 to about 1:2. In onepreferred embodiment, the weight ratio of the hydrophilically-modifiedcross-linked silicone elastomer and the acrylic rheology modifier isfrom about 1:1.

The compositions of the invention typically comprise a polyol, forexample in an amount from about 20% to about 75%, or from about 25% toabout 65% by weight of the composition, or more typically in an amountfrom about 35% to about 50% or from about 40% to about 50% by weight ofthe composition. In one preferred embodiment, the polyol will compriseabout 45% by weight of the composition.

Suitable polyols for inclusion in the compositions include, withoutlimitation, C₂₋₆ polyols such as ethylene glycol, propylene glycol,butylene glycol, hexylene glycol, sorbitol, diethylene glycol, andglycerin. In one preferred embodiment, the polyol comprises glycerin.

The compositions of the invention also typically comprise an alcohol,for example in an amount from about 20% to about 75%, or from about 25%to about 65% by weight of the composition, or more typically comprisefrom about 35% to about 50% or from about 40% to about 50% by weight ofthe composition. In one preferred embodiment, the alcohol comprisesabout 45% by weight of the composition.

Any alcohol can be used in the compositions of the invention, butpreferably the alcohol is a low order alcohol, such as ethanol,methanol, n-propanol, isopropanol, n-butanol, isobutanol, andtert-butanol. In one preferred embodiment, the alcohol comprisesethanol.

The weight ratio of the polyol to the alcohol will typically range fromabout 10:1 to about 1:10, or from about 5:1 to about 1:5, or from about2:1 to about 1:2, or about 1:1.

The compositions also comprise a fragrance oil (or blend of fragranceoils) which will typically comprise from about 0.5% to about 25%, fromabout 1% to about 20%, from about 3% to about 15%, from about 5% toabout 10%, and more typically from about 2% to about 8% by weight of thecomposition. In one preferred embodiment, a fragrance oil comprisesabout 5% by weight of the composition.

Any fragrance oil can be used in the compositions of the invention, suchas those described in U.S. Patent Application Publication No.2013/0280409, hereby incorporated by reference in its entirety. Forexample, the fragrance oil may include any one or more of extracts ofnatural raw materials such as essential oils, concretes, absolutes,resins, resinoids, balsams, tinctures such as, for example, ambergristincture; amyris oil; angelica seed oil; angelica root oil; aniseed oil;valerian oil; basil oil; wood moss absolute; bay oil; mugwort oil;benzoin resin; bergamot oil; beeswax absolute; birch tar oil; bitteralmond oil; savory oil; bucco-leaf oil; cabreuva oil; cade oil; calamusoil; camphor oil; cananga oil; cardamom oil; cascarilla oil; cassia oil;cassia absolute; castoreum absolute; cedar-leaf oil; cedarwood oil;cistus oil; citronella oil; lemon oil; copaiba balsam; copaiba balsamoil; coriander oil; costus root oil; cumin oil; cypress oil; davana oil;dill oil; dillseed oil; eau de brouts absolute; oakmoss absolute; elemioil; tarragon oil; eucalyptus citriodora oil; eucalyptus oil; fenneloil; fir oil; galbanum oil; galbanum resin; geranium oil; grapefruitoil; guaiac wood oil; gurjun balsam; gurjun balsam oil; helichrysumabsolute; helichrysum oil; ginger oil; iris root abolute; iris root oil;jasmine absolute; calamus oil; blue camomile oil; Roman camomile oil;carrot-seed oil; cascarilla oil; pine-needle oil; spearmint oil; carawayoil; labdanum oil; labdanum absolute; labdanum resin; lavandin absolute;lavandin oil; lavender absolute; lavender oil; lemongrass oil; lovageoil; distilled lime oil; pressed lime oil; linaloe oil; litsea cubebaoil; bay-leaf oil; mace oil; marjoram oil; mandarin oil; massoi barkoil; mimosa absolute; ambrette oil; tincture of musk; clary sage oil;myristica oil; myrrh absolute; myrrh oil; myrtle oil; clove leaf oil;clove flower oil; neroli oil; olibanum abolute; olibanum oil; opopanaxoil; orange blossom absolute; orange oil; origanum oil; palmarosa oil;patchouli oil; perilla oil; Peru balsam oil; parsley leaf oil; parsleyseed oil; petitgrain oil; peppermint oil; pepper oil; pimento oil; pineoil; pennyroyal oil; rose absolute; rosewood oil; rose oil; rosemaryoil; Dalmatian sage oil; Spanish sage oil; sandalwood oil; celery seedoil; spike lavender oil; Japanese aniseed oil; styrax oil; tagetes oil;fir-needle oil; tea-tree oil; turpentine oil; thyme oil; Tolu balsam;tonka absolute; tuberose absolute; vanilla extract; violet leafabsolute; verbena oil; vetiver oil; juniper oil; wine-lees oil; wormwoodoil; wintergreen oil; ylang oil; hyssop oil; civet absolute; cinnamonleaf oil; cinnamon bark oil; as well as fractions thereof orconstituents isolated therefrom; and combinations thereof.

Additional suitable fragrances, as listed in European Patent No.EP2106704B1, include, for example, any one or more of hydrocarbons, suchas 3-carene; α-pinene; β-pinene; α-terpinene; γ-terpinene; p-cymene;bisabolene; camphene; caryophyllene, cedrene; farnesene; liminene;longifolene; myrcene; ocimene; valencene; (E,Z)-1,3,5-undecatriene;

Aliphatic alcohols, such as hexanol; octanol; 3-octanol;2,6-dimethylheptanol; 2-methylheptanol; 2-methyloctanol; (E)-3-hexenol;(E) and (Z)-3-hexenol; 1-octen-3-ol; mixtures of3,4,5,6,6-pentamethyl-3/4-hepten-2-ol and3,5,6,6-tetramethyl-4-methyleneheptan-2-ol; (E,Z)-2,6-nonadienol;3,7-dimethyl-7-methoxyoctan-2-ol; 9-decenol; 10-undecenol;4-methyl-3-decen-5-ol;

Alphatic aldehydes and their acetals, such as hexanal; heptanal;octanal; nonanal; decanal; undecanal; dodecanal; tridecanal;2-methyloctanal; 2-methylnonanal; (E)-2-hexenal; (Z)-4-heptenal;2,6-dimethyl-5-heptenal; 10-undecenal; (E)-4-decenal; 2-dodecenal;2,6,10-trimethyl-5,9-undecadienal; heptanal diethyl acetal;1,1-dimethoxy-2,2,5-trimethyl-4-hexene; citronellyl oxyacetaldehyde;

Aliphatic ketones and oximes thereof, such as 2-heptanone; 2-octanone;3-octanone; 2-nonanone; 5-methyl-3-heptanone; 5-methyl-3-heptanoneoxime; 2,4,4,7-tetramethyl-6-octen-3-one;

Aliphatic sulphur-containing compounds, such as 3-methylthiohexanol;3-methylthiohexyl acetate; 3-mercaptohexanol; 3-mercaptohexyl acetate;3-mercaptohexyl butyrate; 3-acetylthiohexyl acetate; 1-menthene-8-thiol;

Aliphatic nitriles, such as 2-nonenenitrile; 2-tridecenenenitrile;2,12-tridecenenenitrile; 3,7-dimethyl-2,6-octadienenitrile;3,7-dimethyl-6-octenenitrile;

Aliphatic carboxylic acids and esters thereof, such as (E)- and(Z)-3-hexenyl formate; ethyl acetoacetate; isoamyl acetate; hexylacetate; 3,5,5-trimethylhexyl acetate; 3-methyl-2-butenyl acetate;(E)-2-hexenyl acetate; (E)- and (Z)-3-hexenyl acetate; octyl acetate;3-octyl acetate; 1-octen-3-yl acetate; ethyl butyrate; butyl butyrate;isoamyl butyrate; hexyl butyrate; (E)- and (Z)-3-hexenyl isobutyrate;hexyl crotonate; ethyl isovalerate; ethyl 2-methylpentanoate; ethylhexanoate; allyl hexanoate; ethyl heptanoate; allyl heptanoate; ethyloctanoate; ethyl (E,Z)-2,4-decadienoate; methyl 2-octynoate; methyl2-nonynoate; allyl-2-isoamyloxyacetate;methyl-3,7-dimethyl-2,6-octadienoate;

Acyclic terpene alcohols, such as citronellol; geraniol; nerol;linalool; lavandulol; nerolidol; farnesol; tetrahydrolinalool;tetrahydrogeraniol; 2,6-dimethyl-7-octen-2-ol; 2,6-dimethyloctan-2-ol;2-methyl-6-methylene-7-octen-2-ol; 2,6-dimethyl-5,7-octadien-2-ol;2,6-dimethyl-3,5-octadien-2-ol; 3,7-dimethyl-4,6-octadien-3-ol;3,7-dimethyl-1,5,7-octatrien-3-ol; 2,6-dimethyl-2,5,7-octatrien-1-ol;and formates, acetates, propionates, isobutyrates, butyrates,isovalerates, pentanoates, hexanoates, crotonates, tiglinates,3-methyl-2-butenoates thereof;

Acyclic terpene aldehydes and ketones, such as geranial; neral;citronellal; 7-hydroxy-3,7-dimethyloctanal;7-methoxy-3,7-dimethyloctanal; 2,6,10-trimethyl-9-undecenal;geranylacetone; and the dimethyl and diethyl acetals of geranial, neral,7-hydroxy-3,7-dimethyloctanal;

Cyclic terpene alcohols, such as menthol; isopulegol; alpha-terpineol;terpineol-4; menthan-8-ol; menthan-1-ol; menthan-7-ol; borneol;isoborneol; linalool oxide; nopol; cedrol; ambrinol; vetiverol; guaiol;and the formates, acetates, propionates, isobutyrates, butyrates,isovalerates, pentanoates, hexanoates, crotonates, tiglinates,3-methyl-2-butenoates thereof;

Cyclic terpene aldehydes and ketones, such as menthone; isomenthone;8-mercaptomenthan-3-one; carvone; camphor; fenchone; alpha-ionone;beta-ionone; alpha-n-methylionone; beta-n-methylionone;alpha-isomethylionone; beta-isomethylionone; alpha-irone;alpha-damascone; beta-damascone; beta-damascenone; delta-damascone;gamma-damascone; 1-(2,4,4-trimethyl-2-cyclohexen-1-yl)-2-buten-1-one;1,3,4,6,7,8a-hexahydro-1,1,5,5-tetramethyl-2H-2,4a-methanonaphthalen-8(5H)-one;nootkatone; dihydronootkatone; alpha-sinensal; beta-sinensal; acetylatedcedarwood oil (methyl cedryl ketone);

Cyclic alcohols, such as 4-tert.-butylcyclohexanol;3,3,5-trimethylcyclohexanol; 3-isocamphylcyclohexanol;2,6,9-trimethyl-Z2,Z5,E9-cyclododecatrien-1-ol;2-isobutyl-4-methyltetrahydro-2H-pyran-4-ol;

Cycloaliphatic alcohols, such as alpha-3,3-trimethylcyclohexylmethanol;2-methyl-4-(2,2,3-trimethyl-3-cyclopent-1-yl)butanol;2-methyl-4-(2,2,3-trimethyl-3-cyclopent-1-yl)-2-buten-1-ol;2-ethyl-4-(2,2,3-trimethyl-3-cyclopent-1-yl)-2-buten-1-ol;3-methyl-5-(2,2,3-trimethyl-3-cyclopent-1-yl)-pentan-2-ol;3-methyl-5-(2,2,3-timethyl-3-cyclopent-1-yl)-4-penten-2-ol;3,3-dimethyl-5-(2,2,3-trimethyl-3-cyclopent-1-yl)-4-penten-2-ol;1-(2,2,6-trimethylcyclohexyl)pentan-3-ol;1-(2,2,6-trimethylcyclohexyl)hexan-3-ol;

Cyclic and cycloaliphatic ethers, such as cineol; cedryl methyl ether;cyclododecyl methyl ether; (ethoxymethoxy)cyclododecane; alpha-cedreneepoxide; 3a,6,6,9a-tetramethyl-dodecahydronaphtho[2,1-b]furan;3a-ethyl-6,6,9a-trimethyldodecahydro-naphtho[2,1-b]furan;1,5,9-trimethyl-13-oxabicyclo[10.1.0]trideca-4,8-diene; rose oxide;2-(2,4-dimethyl-3-cyclohexen-1-yl)-5-methyl-5-(1-methylpropyl)-1,3-dioxane;

Cyclic ketones, such as 4-tert.-butylcyclohexanone;2,2,5-trimethyl-5-pentylcyclopentanone; 2-heptylcyclopentanone;2-pentylcyclopentanone; 2-hydroxy-3-methyl-2-cyclopenten-1-one;3-methyl-cis-2-penten-1-yl-2-cyclopenten-1-one;3-methyl-2-pentyl-2-cyclopenten-1-one; 3-methyl-4-cyclopentadecenone;3-methyl-5-cyclopentadecenone; 3-methylcyclopentadecanone;4-(1-ethoxyvinyl)-3,3,5,5-tetramethylcyclohexanone;4-tert.-pentylcyclohexanone; 5-cyclohexadecen-1-one;6,7-dihydro-1,1,2,3,3-pentamethyl-4(5H)-indanone;9-cycloheptadecen-1-one; cyclopentadecanone; cyclohexadecanone;

Cycloaliphatic aldehydes, such as2,4-dimethyl-3-cyclohexenecarbaldehyde;2-methyl-4-(2,2,6-trimethyl-cyclohexen-1-yl)-2-butenal;4-(4-hydroxy-4-methylpentyl)-3-cyclohexenecarbaldehyde;4-(4-methyl-3-penten-1-yl)-3-cyclohexenecarbaldehyde;

Cycloaliphatic ketones, such as1-(3,3-dimethylcyclohexyl)-4-penten-1-one;1-(5,5-dimethyl-1-cyclohexen-1-yl)-4-penten-1-one;2,3,8,8-tetramethyl-1,2,3,4,5,6,7,8-octahydro-2-naphthalenyl methylketone; methyl-2,6,10-trimethyl-2,5,9-cyclododecatrienyl ketone;tert.-butyl (2,4-dimethyl-3-cyclohexen-1-yl) ketone;

Esters of cyclic alcohols, such as 2-tert.-butylcyclohexyl acetate;4-tert.-butylcyclohexyl acetate; 2-tert.-pentylcyclohexyl acetate;4-tert.-pentylcyclohexyl acetate; decahydro-2-naphthyl acetate;3-pentyltetrahydro-2H-pyran-4-yl acetate;decahydro-2,5,5,8a-tetramethyl-2-naphthyl acetate;4,7-methano-3a,4,5,6,7,7a-hexahydro-5 or 6-indenyl acetate;4,7-methano-3a,4,5,6,7,7a-hexahydro-5 or 6-indenyl propionate;4,7-methano-3a,4,5,6,7,7a-hexahydro-5 or 6-indenyl isobutyrate;4,7-methanooctahydro-5 or 6-indenyl acetate;

Esters of cycloaliphatic carboxylic acids, such as allyl3-cyclohexylpropionate; allyl cyclohexyloxyacetate; methyldihydrojasmonate; methyl jasmonate; methyl2-hexyl-3-oxocyclopentanecarboxylate; ethyl2-ethyl-6,6-dimethyl-2-cyclohexenecarboxylate; ethyl2,3,6,6-tetramethyl-2-cyclohexenecarboxylate; ethyl2-methyl-1,3-dioxolane-2-acetate;

Aromatic hydrocarbons, such as styrene and diphenylmethane;

Araliphatic alcohols, such as benzyl alcohol; 1-phenylethyl alcohol;2-phenylethyl alcohol; 3-phenylpropanol; 2-phenylpropanol;2-phenoxyethanol; 2,2-dimethyl-3-phenylpropanol;2,2-dimethyl-3-(3-methylphenyl)propanol; 1,1-dimethyl-2-phenylethylalcohol; 1,1-dimethyl-3-phenylpropanol;1-ethyl-1-methyl-3-phenylpropanol; 2-methyl-5-phenylpentanol;3-methyl-5-phenylpentanol; 3-phenyl-2-propen-1-ol; 4-methoxybenzylalcohol; 1-(4-isopropylphenyl)ethanol;

Esters of araliphatic alcohols and aliphatic carboxylic acids, such asbenzyl acetate; benzyl propionate; benzyl isobutyrate; benzylisovalerate; 2-phenylethyl acetate; 2-phenylethyl propionate;2-phenylethyl isobutyrate; 2-phenylethyl isovalerate; 1-phenyl ethylacetate; alpha-trichloromethylbenzyl acetate; alpha,alpha-dimethylphenylethyl acetate; alpha,alpha-dimethylphenylethylbutyrate; cinnamyl acetate; 2-phenoxyethyl isobutyrate; 4-methoxybenzylacetate; araliphatic ethers such as for example 2-phenylethyl methylether; 2-phenylethyl isoamyl ether; 2-phenylethyl 1-ethoxyethyl ether;phenylacetaldehyde dimethyl acetal; phenylacetaldehyde diethyl acetal;hydratropaldehyde dimethyl acetal; phenylacetaldehyde glycerol acetal;2,4,6-trimethyl-4-phenyl-1,3-dioxane; 4,4a,5,9b-tetrahydroindeno[1,2-d]-m-dioxin; 4,4a,5,9b-tetrahydro-2,4-dimethylindeno[1,2-d]-m-dioxin;

Aromatic and araliphatic aldehydes, such as benzaldehyde;phenylacetaldehyde; 3-phenylpropanal; hydratropaldehyde;4-methylbenzaldehyde; 4-methylphenylacetaldehyde;3-(4-ethylphenyl)-2,2-dimethylpropanal;2-methyl-3-(4-isopropylphenyl)propanal;2-methyl-3-(4-tert.-butylphenyl)propanal;3-(4-tert.-butylphenyl)propanal; cinnamaldehyde;alpha-butylcinnamaldehyde; alpha-amylcinnamaldehyde;alpha-hexylcinnamaldehyde; 3-methyl-5-phenylpentanal;4-methoxybenzaldehyde; 4-hydroxy-3-methoxybenzaldehyde;4-hydroxy-3-3,4-methylenedioxybenzaldehyde; 3,4-dimethoxy-benzaldehyde;2-methyl-3-(4-methoxyphenyl)propanal;2-methyl-3-(4-methylenedioxyphenyl)propanal;

Aromatic and araliphatic ketones, such as acetophenone;4-methylacetophenone; 4-methoxyacetophenone;4-tert.-butyl-2,6-dimethylacetophenone; 4-phenyl-2-butanone;4-(4-hydroxyphenyl)-2-butanone; 1-(2-naphthalenyl)ethanone;benzophenone; 1,1,2,3,3,6-hexamethyl-5-indanyl methyl ketone;6-tert.-butyl-1,1-dimethyl-4-indanyl methyl ketone;1-[2,3-dihydro-1,1,2,6-tetramethyl-3-(1-methylethyl)-1H-5-indenyl]ethanone;5′,6′,7′,8′-tetrahydro-3′,5′,5′,6′,8′,8′-hexamethyl-2-acetonaphthone;

Aromatic and araliphatic carboxylic acids and esters thereof, such asacid; phenylacetic acid; methyl benzoate; ethyl benzoate; hexylbenzoate; benzyl benzoate; methyl phenylacetate; ethyl phenylacetate;geranyl phenylacetate; phenylethyl phenylacetate; methyl cinnamate;ethyl cinnamate; benzyl cinnamate; phenylethyl cinnamate; cinnamylcinnamate; allyl phenoxyacetate; methyl salicylate; isoamyl salicylate;hexyl salicylate; cyclohexyl salicylate; cis-3-hexenyl salicylate;benzyl salicylate; phenylethyl salicylate; methyl2,4-dihydroxy-3,6-dimethylbenzoate; ethyl 3-phenylglycidate; ethyl3-methyl-3-phenylglycidate;

Nitrogen-containing aromatic compounds, such as2,4,6-trinitro-1,3-dimethyl-5-tert.-butylbenzene;3,5-dinitro-2,6-dimethyl-4-tert.-butylacetophenone; cinnamonitrile;5-phenyl-3-methyl-2-pentenenitrile; 5-phenyl-3-methylpentanenitrile;methyl anthranilate; methyl N-methylanthranilate; Schiff bases of methylanthranilate with 7-hydroxy-3,7-dimethyloctanal;2-methyl-3-(4-tert.-butylphenyl)propanal or2,4-dimethyl-3-cyclohexenecarbaldehyde; 6-isopropylquinoline;6-isobutylquinoline; 6-sec.-butylquinoline; indole; skatole;2-methoxy-3-isopropylpyrazine; 2-isobutyl-3-methoxypyrazine;

Phenols, phenyl ethers and phenyl esters, such as estragole; anethole;eugenol; eugenyl methyl ether; isoeugenol; isoeugenyl methyl ether;thymol; carvacrol; diphenyl ether; beta-naphthyl methyl ether;beta-naphthyl ethyl ether; beta-naphthyl isobutyl ether;1,4-dimethoxybenzene; eugenyl acetate; 2-methoxy-4-methylphenol;2-ethoxy-5-(1-propenyl)phenol; p-cresyl phenylacetate;

Heterocyclic compounds, such as 2,5-dimethyl-4-hydroxy-2H-furan-3-one;2-ethyl-4-hydroxy-5-methyl-2H-furan-3-one;3-hydroxy-2-methyl-4H-pyran-4-one; 2-ethyl-3-hydroxy-4H-pyran-4-one; and

Lactones, such as 1,4-octanolide; 3-methyl-1,4-octanolide;1,4-nonanolide; 1,4-decanolide; 8-decen-1,4-olide; 1,4-undecanolide;1,4-dodecanolide; 1,5-decanolide; 1,5-dodecanolide;1,15-pentadecanolide; cis and trans-11-pentadecen-1,15-olide; cis- andtrans-12-pentadecen-1,15-olide; 1,16-hexadecanolide;9-hexadecen-1,16-olide; 10-oxa-1,16-hexadecanolide;11-oxa-1,16-hexadecanolide; 12-oxa-1,16-hexadecanolide; ethylene1,12-dodecanedioate; ethylene 1,13-tridecanedioate; coumarin;2,3-dihydrocoumarin; octahydrocoumarin.

Other suitable fragrance oils are those listed in U.S. PatentApplication Publication Nos. 2012/0107529 and 2013/0202788, and U.S.Pat. No. 7,294,612, which are incorporated by reference in theirentirety herein.

The compositions of the invention may also be formulated as insectrepellant compositions that provide extended release of an insectrepellant oil. The compositions may comprise any insect repellant oil oroils, including, for example, essential oils of citronella, catnip, andlavender; neem seed oil, and soy oil. Other suitable insect repellantoils are those listed in PCT Application Publication No. WO/2003013243;U.S. Pat. No. 8,501,205; and U.S. Published Application No.2013/0084347, which are incorporated by reference in their entiretyherein. These include, without limitation, lemongrass oil, rose geraniumoil, lemon eucalyptus oil, and litsea cubeba oil, camphor, mineral oil,and geranium oil. As used herein, the term “fragrance oil” is intendedto include insect repellant oils.

The compositions of the invention are useful for application to thehuman integumentary system, including, skin, lips, nails, hair, andother keratinous surfaces. As used herein, the term “keratinous surface”refers to keratin-containing portions of the human integumentary system,which includes, but is not limited to, skin, lips, hair (includingeyebrows and eyelashes, hair of the scalp, facial hair, and body hairsuch as hair of the arms, legs, etc.), and nails (toenails, fingernails,cuticles, etc.) of mammalians, preferably humans.

In some embodiments, the compositions of the invention are in the formof a clear or translucent gel. The compositions may take the form ofsemi-solid, non-flowable, or flowable gels. In other embodiments, thecompositions of the invention may be formulated as a cream, ointment,paste, foam, lotion, or stick.

It has been advantageously found that the compositions provide amoisturizing benefit to skin, due to the high level of humectant(polyol) and thus do not dry skin as might be expected from analcohol-containing gel.

The compositions of the invention may be used in any suitable personalcare product, such as perfumes, skincare products, including withoutlimitation, body washes, face washes, body oils, body lotions or creams,anti-aging creams or lotions, body gels, day creams or lotions, nightcreams or lotions, treatment creams, skin protection ointments,moisturizing gels, body milks, suntan lotions, suntan creams,self-tanning creams, artificial tanning compositions, cellulite gels,peeling preparations, facial masks, depilatories, shaving creams,deodorants, anti-perspirants, and the like, particularly for topicaladministration.

In some embodiments, the compositions are used in hair products such ashair gels, mousses, sculpting and fixative products, and the like.

The compositions of the invention can be used in any suitable cosmetic,including color cosmetics or cosmetics without color.

Suitable colorants include those such as dyes, pigments and lakes. Asused herein, the term “pigments” embraces lakes and fillers such astalc, calcium carbonate, etc. Exemplary inorganic pigments include, butare not limited to, inorganic oxides and hydroxides such as magnesiumoxide, magnesium hydroxide, calcium oxide, calcium hydroxides, aluminumoxide, aluminum hydroxide, iron oxides (α-Fe₂O₃, γ-Fe₂O₃, Fe₃O₄, FeO)and iron hydroxides including red iron oxide, yellow iron oxide andblack iron oxide, titanium dioxide, titanium lower oxides, zirconiumoxides, chromium oxides, chromium hydroxides, manganese oxides,manganese hydroxides, cobalt oxides, cobalt hydroxides, cerium oxides,cerium hydroxides, nickel oxides, nickel hydroxides, zinc oxides andzinc hydroxides and composite oxides and composite hydroxides such asiron titanate, cobalt titanate and cobalt aluminate and the like. Theinorganic oxide particles may be selected from, for example, silica,alumina, zinc oxide, iron oxide and titanium dioxide particles, andmixtures thereof. In one embodiment, the pigments have a particle sizefrom 5 nm to 500 microns, or from 5 nm to 250 microns, or from 10 nm to100 microns. In some embodiments, the particle size (median) will beless than bout 5 microns or less than 1 micron.

Additional exemplary color additive lakes include, for example: D&C RedNo. 19 (e.g., CI 45170, CI 73360 or CI 45430); D&C Red No. 9 (CI 15585);D&C Red No. 21 (CI 45380); D&C Orange No. 4 (CI 15510); D&C Orange No. 5(CI 45370); D&C Red No. 27 (CI 45410); D&C Red No. 13 (CI 15630); D&CRed No. 7 (CI 15850:1); D&C Red No. 6 (CI 15850:2); D&C Yellow No. 5 (CI19140); D&C Red No. 36 (CI 12085); D&C Orange No. 10 (CI 45475); D&CYellow No. 19 (CI 15985); FD&C Red #40 (CI#16035); FD&C Blue #1(CI#42090); FD&C Yellow #5 (CI#19140); or any combinations thereof.

In some embodiments, goniochromatic colorants (color travel pigments)are added to the clear or translucent gels of the invention, to providea unique visual effect on the skin. Goiochromatic colorants have aplatelet-shaped base substrate and are coated with alternating layers ofhigh and low refractive index materials. For example, goniochromaticpigments such as Reflecks Pinpoints of Pearl pigments (calcium sodiumborosilicate base coated with titanium dioxide and tin dioxide) sold byBASF may be used in the compositions, which have a particle size betweenabout 4 and about 190 μm. The amount of goniochromatic pigment can be,for example, in an amount from about 0.1% to about 5%, and morepreferably between about 0.25% and about 4.5% by weight of the totalcomposition.

Suitable fillers may include talc, silica, alumina, zinc stearate, mica,kaolin, nylon (in particular orgasol) powder, polyethylene powder,polypropylene powder, acrylates powders, Teflon, starch, boron nitride,copolymer microspheres such as Expancel (Nobel Industrie), Polytrap (DowCorning), and silicone resin microbeads (Tospearl from Toshiba).

Other fillers that may be used in the compositions of the inventioninclude inorganic powders such as chalk, fumed silica, fumed alumina,calcium oxide, calcium carbonate, magnesium oxide, magnesium carbonate,Fuller's earth, attapulgite, bentonite, muscovite, phlogopite, syntheticmica, lepidolite, hectorite, biotite, lithia mica, vermiculite, aluminumsilicate, aluminum magnesium silicate, diatomaceous earth, starch, alkyland/or trialkyl aryl ammonium smectites, chemically modified magnesiumaluminum silicate, organically modified montmorillonite clay, hydratedaluminum silicate, hydrated silica, fumed aluminum starch octenylsuccinate barium silicate, calcium silicate, magnesium silicate,strontium silicate, metal tungstate, magnesium, silica alumina, zeolite,barium sulfate, calcined calcium sulfate (calcined gypsum), calciumphosphate, fluorine apatite, hydroxyapatite, ceramic powder, metallicsoap (zinc stearate, magnesium stearate, zinc myristate, calciumpalmitate, and aluminum stearate), colloidal silicon dioxide; organicpowder, cyclodextrin, methyl polymethacrylate powder, copolymer powderof styrene and acrylic acid, benzoguanamine resin powder, andpoly(ethylene tetrafluoride) powder.

The compositions may include natural or synthetic film-forming polymers.Suitable polymeric film formers include polyolefins, silicone polymers(e.g., dimethicones, dimethiconols, amodimethicones, silicone resins,etc.), (meth)acrylates, alkyl (meth)acrylates, polyurethanes,fluoropolymers, silicone polyurethanes, and silicone acrylates such asacrylates/dimethicone copolymers. In some embodiments, it may bedesirable to add a hydrophilic or water-soluble film former (e.g.,cellulosics, polysaccharides, polyquaterniums (such as polyquaternium-37(INCI), etc.) to the composition to improve spreading, emulsionstability, aesthetic look and feel, etc. Elastomers formed fromethylene, propylene, butylene, and/or styrene monomers may also beuseful.

The compositions of the invention may comprise any conventional cosmeticcomponents, including pigments and colorants, fillers and cosmeticpowders, film formers, additional gelling agents, thickeners,conditioners, actives, solvents, emulsifiers, humectants, emollients, pHadjusters, antioxidants, preservatives, and the like.

The compositions of the invention may include a cosmetically ordermatologically acceptable vehicle, which may be in the form of, forexample, a serum, a cream, a lotion, a gel, or a stick, and may comprisean emulsion (e.g., water-in-oil, oil-in-water, water-in-silicone,silicone-in-water, polyol-in-silicone, silicone-in-polyol emulsion,etc.), or may comprise an aqueous or ethanolic vehicle, silicone (e.g.,cyclomethicone, dimethicone, etc.), hydrocarbon (e.g., petrolatum,isododecane, etc.), ester oil (isopropyl myristate, myristyl myristate,or the like. The vehicle may be anhydrous and may comprise oils, such asdimethicones, hydrocarbons (e.g., isododecane), petrolatum, ester oils,and the like. The vehicle may further comprise an emulsifier, gellingagent, structuring agent, rheology modifier (e.g., a thickener), filmformer, or the like. The vehicle may comprise from about 25% to about99% by weight of the composition.

The compositions may further include an emulsifier. The amount ofemulsifier may be from about 0.001 to about 10% by weight, butpreferably will range from about 0.01 to about 5% by weight, and mostpreferably about 0.1 to about 1% by weight, based upon the total weightof the composition. The emulsifier may be ionic, zwitterionic, ornonionic. Suitable emulsifiers include those of the polyethoxylated type(e.g., polyoxyethylene ethers or esters),polydiorganosiloxane-polyoxyalkylene block copolymers (e.g., dimethiconecopolyol), Steareth-20, Steareth-21, fatty alcohols (e.g., CetearylAlcohol), Polyoxethylene sorbitan fatty acid esters (i.e.,polysorbates), and Hydrogenated Castor Oil, to name a few. Additionalemulsifiers are provided in the INCI Ingredient Dictionary and Handbook11th Edition 2006, the disclosure of which is hereby incorporated byreference.

The compositions may further include an additional gelling agent. Thegelling agent may comprise, for example, a silicone resin, includingDimethicone/Vinyl Dimethicone crosspolymer, silicone T-resins, ETPEA,polyamides, cellulose ethers (e.g., methyl cellulose or ethyl cellulose)and the like. Thickeners such as acrylates copolymers, hydroxyalkylcellulose, carboxymethylcellulose, carbomers, and vegetable gums such asxanthan gum may be included.

The compositions may also comprise humectants (in addition to thepolyol) such as polyols (e.g., glycols), including without limitation,glycerin, propylene glycol, ethoxydiglycol, butylene glycol, pentyleneglycol, hexylene glycol, caprylyl glycol, and the like. These may beadded in amount, for example, from about 0.001 to about 5% by weight ofthe composition.

In some embodiments, the compositions may comprise one or more ofoptical modification particles (e.g., soft focus particles), waxes,vegetable oils, esters, and fatty alcohols/acids.

The compositions of the invention may optionally include additional skinbenefit agents such as skin penetration enhancers; emollients (e.g.,isopropyl myristate, petrolatum, dimethicone oils, ester oils, mineraloils, or hydrocarbon oils); skin plumpers (e.g., palmitoyloligopeptide), humectants (e.g., polyols, including propylene glycol,glycerin, etc.); antioxidants (e.g., BHT, ascorbic acid, sodiumascorbate, ascorbyl palmitate, beta-carotene, thiodipropionic acid,vitamin E, etc.); vitamins (e.g., tocopherol, tocopheryl acetate, etc.);alpha-hydroxy acids (e.g., glycolic acid), beta-hydroxy acids (e.g.,salicylic acid); retinoids (e.g., retinoic acid, all-trans-retinoicacid, retinaldehyde, retinol, and retinyl esters such as acetates orpalmitates); other anti-aging ingredients (e.g., collagen stimulators,collagenase inhibitors, elastase inhibitors); depigmenting agents (e.g.,TDPA, hydroquinone, kojic acid, etc.); exfoliating agents (e.g.,glycolic acid, 3,6,9-trioxaundecanedioic acid, etc.); estrogensynthetase stimulating compounds (e.g., caffeine and derivatives);compounds capable of inhibiting 5 alpha-reductase activity (e.g.,linolenic acid, linoleic acid, finasteride, and mixtures thereof); andbarrier function enhancing agents (e.g., ceramides, glycerides,cholesterol and its esters, alpha-hydroxy and omega-hydroxy fatty acidsand esters thereof, etc.), to name a few. The amounts of these varioussubstances are those that are conventionally used in thecosmetic/personal care fields to achieve their intended purposes, forexample, they may constitute from about 0.001 weight % to about 20weight % of the total weight of the composition.

The compositions may also optionally include one or more ofanti-allergenics; anti-fungals; antiseptics; anti-irritants;anti-inflammatory agents; antimicrobials; anti-bacterials; andanalgesics in an amount from about 0.001 weight % to about 20 weight %of the total weight of the composition.

In some embodiments, the compositions comprise one or more ofanti-perspirants and deodorants.

A sunscreen may be included to protect the skin from damagingultraviolet rays. In one embodiment, the sunscreen provides both UVA andUVB protection, by using either a single sunscreen or a combination ofsunscreens. Among suitable sunscreens are avobenzone, cinnamic acidderivatives (such as octylmethoxy cinnamate), octyl salicylate,oxybenzone, octocrylene, titanium dioxide, zinc oxide, or any mixturesthereof. The sunscreen may be present from about 1% to about 30% byweight of the total composition.

Other suitable components include those agents that provide aprophylactic or therapeutic benefit to skin. Particular mention may bemade of alpha-hydroxy acids, beta hydroxyl acids, ascorbic acid orVitamin C and derivatives thereof (e.g., C₁-C₈ esters thereof);retinoids such as retinol (Vitamin A) and the esters thereof (e.g.,C₁-C₈ esters, such as palmitate), and hyaluronic acid.

Other suitable additives include vitamins, such as tocopherol andascorbic acid; vitamin derivatives such as ascorbyl monopalmitate,tocopheryl acetate, and Vitamin E palmitate; metal chelating agents suchas EDTA or salts thereof and pH adjusters (citric acid, ethanolamine,sodium hydroxide, etc.).

The compositions may also comprise a preservative or anti-microbialagent, for example, methylchloroisothiazolinone, methylisothiazolinone,methylparaben, propylparaben, phenoxyethanol, or caprylyl glycol.

Methods for providing prolonged delivery of a fragrance oil are alsoencompassed by the invention, comprising applying to a surface acomposition of the invention. In some embodiments, the compositions areapplied to a human integument, such as the skin of the face, hands, orbody, or the hair of the scalp.

The compositions of the invention are capable of releasing a fragranceoil over a longer period of time as compared to otherwise identicalcompositions that lack either the hydrophilically-modified cross-linkedsilicone elastomer or the acrylic rheology modifier.

The composition can be applied as often as necessary to impart thedesired fragrance intensity, cosmetic finish, color or appearance to theskin, etc. A composition according to the invention is expected toachieve extended release of fragrance oil for a long-wear period such asfrom about 1 to about 48 hours, from about 1 to about 24 hours or fromabout 1 to about 12 hours.

The composition may be suitably packaged in a container equipped with apump dispenser, for example. The composition in such an embodiment ispreferably in the form of a flowable gel having a rheology suitable forflowing during pumping and thickening after being deposited on the skin(e.g., a thixotropic rheology).

In one embodiment, the composition is intended for use as anon-therapeutic treatment. In another embodiment, the composition is anarticle intended to be rubbed, poured, sprinkled, or sprayed on,introduced into, or otherwise applied to the human body for cleansing,beautifying, promoting attractiveness, or altering the appearance, inaccordance with the US FD&C Act, § 201(i).

EXAMPLES Example 1

Three fragrance gels were prepared according to the formulas in Table 1.The inventive gel included both a hydrophilically-modified cross-linkedsilicone elastomer (PEG-12 dimethicone/PPG-20 crosspolymer) and anacrylic rheology modifier (hydroxyethyl acrylate/sodiumacryloyldimethyltaurate copolymer). Gel A excluded only the PEG-12dimethicone/PPG-20 crosspolymer and Gel B excluded only the hydroxyethylacrylate/sodium acryloyldimethyltaurate copolymer. The fragrance oil ineach of the formulations was limonene.

The hydrophilically-modified cross-linked silicone elastomer used in theformulations is sold as EL-7040 by Dow Corning, which also containscaprylyl methicone. EL-7040 contains 20% PEG-12 dimethicone/PPG-20crosspolymer, so that PEG-12 dimethicone/PPG-20 crosspolymer was presentin the inventive gel and in Gel B in an amount of 1.5% by weight of thetotal formulation. The acrylic rheology modifier used in theformulations is sold as Simulgel INS-100 by SEPPIC, which also containsisohexadecane and polysorbate 60. Simulgel INS-100 contains 37.5%hydroxyethyl acrylate/sodium acryloyldimethyltaurate copolymer, so thathydroxyethyl acrylate/sodium acryloyldimethyltaurate copolymer waspresent in the inventive gel and Gel A in an amount of 1.5% by weight ofthe total formulation.

TABLE 1 Inventive Gel Gel A Gel B Material (%) (%) (%) Alcohol SD 40BAnhydrous 41.75 45.50 43.75 Glycerin 41.75 45.50 43.75 Fragrance Oil5.00 5.00 5.00 PEG-12 dimethicone/PPG-20 7.50 0 7.50 crosspolymer andcaprylyl methicone (EL-7040) Hydroxyethyl acrylate/sodium 4.00 4.00 0acryloyldimethyltaurate copolymer and isohexadecane and polysorbate 60(Simulgel INS-100)

A standard fragrance spray (hydro-alcoholic EDT spray) and a gelledversion (with hydroxyethyl cellulose) of the hydro-alcoholic EDT spraywere also prepared, each containing 5.0% by weight of the fragrance oil.All of the preparations were tested to assess the percent of fragranceretained in each formulation over a 24-hour period using headspaceanalysis. Each formulation assessed initially contained 5.0% by weightof a fragrance oil. The fragrance oil comprised an unknown percentage oflimonene, but the same fragrance oil was used in each experiment. Testmaterial (0.20 g) was placed inside the bottom of a 2 oz glass jar, andsmoothed to an even coating. Samples were placed in a 100° F. waterbath, and left uncovered for 0 hours or 24 hours. After 24 hours, thesamples were covered with a vapor impervious film and left untouched for30 minutes. Following 30 minutes, the samples were penetrated and 1 ccof headspace was drawn. The headspace was then analyzed via gaschromatography (GC). The percent of fragrance retention was calculatedas integrated area of the limonene GC peak at 24 hours relative toinitial limonene integrated area. The results of these experiments aredisplayed below in Table 2, as well as in FIG. 1.

TABLE 2 Hydro- Gelled alcoholic hydro- Inventive EDT alcoholic Gel Gel AGel B Spray EDT Spray % Retention 36.8% 3.6% 1.3% 4.9% 0.3% (24 hr vs.initial)

The standard hydro-alcoholic EDT spray retained 4.9% fragrance after 24hours, and the gelled version of the hydro-alcoholic spray retained only0.3% of the fragrance. Gel A, which contained PEG-12 dimethicone/PPG-20crosspolymer but no hydroxyethyl acrylate/sodium acryloyldimethyltauratecopolymer, exhibited a fragrance retention of 3.6% after 24 hours. GelB, which contained hydroxyethyl acrylate/sodium acryloyldimethyltauratecopolymer but no PEG-12 dimethicone/PPG-20 crosspolymer, exhibited afragrance retention of 1.3% after 24 hours. The inventive gel thatcontained both the PEG-12 dimethicone/PPG-20 crosspolymer and thehydroxyethyl acrylate/sodium acryloyldimethyltaurate copolymerunexpectedly retained 36.8% fragrance after 24 hours. The strikingincrease in fragrance retention of the inventive gel is far greater thanan additive effect of each of the PEG-12 dimethicone/PPG-20 crosspolymerand the hydroxyethyl acrylate/sodium acryloyldimethyltaurate copolymer,demonstrating a synergy between the two components.

The invention described and claimed herein is not to be limited in scopeby the specific embodiments herein disclosed since these embodiments areintended as illustrations of several aspects of the invention. Anyequivalent embodiments are intended to be within the scope of thisinvention. Indeed, various modifications of the invention in addition tothose shown and described therein will become apparent to those skilledin the art from the foregoing description. Such modifications are alsointended to fall within the scope of the appended claims. Allpublications cited herein are incorporated by reference in theirentirety.

What is claimed:
 1. A composition for providing extended release offragrance comprising: (a) a hydrophilically-modified cross-linkedsilicone elastomer; (b) an acrylic rheology modifier; (c) a polyol; (d)an alcohol; and (e) a fragrance oil, wherein the composition is capableof releasing said fragrance oil over a longer period of time as comparedto an otherwise identical composition lacking either saidhydrophilically-modified cross-linked silicone elastomer or said acrylicrheology modifier.
 2. The composition according to claim 1, wherein saidhydrophilically-modified cross-linked silicone elastomer comprisespoly(alkylene oxide) chains grafted to a silicone backbone.
 3. Thecomposition according to claim 1, wherein said hydrophilically-modifiedcross-linked silicone elastomer comprises PEG-12 dimethicone/PPG-20crosspolymer.
 4. The composition according to claim 1, wherein saidacrylic rheology modifier comprises a copolymer of an acrylate monomerand an acrylamide monomer.
 5. The composition according to claim 1,wherein said acrylic rheology modifier comprises hydroxylethylacrylate/sodium acryloyldimethyltaurate copolymer.
 6. The compositionaccording to claim 1, wherein said polyol comprises glycerin and saidalcohol comprises ethanol.
 7. The composition according to claim 1,wherein said fragrance oil comprises a blend of one or more fragranceoils.
 8. The composition according to claim 1, wherein saidhydrophilically-modified cross-linked silicone elastomer is present inan amount from about 0.5% to about 5% by weight of the totalcomposition.
 9. The composition according to claim 1, wherein saidacrylic rheology modifier is present in an amount from about 0.5% toabout 5% by weight of the total composition.
 10. The compositionaccording to claim 1, wherein the weight ratio of saidhydrophilically-modified cross-linked silicone elastomer and saidacrylic rheology modifier is from about 2:1 to about 1:2.
 11. Thecomposition according to claim 1, wherein said composition is in theform of a clear or translucent gel.
 12. The composition according toclaim 1, further comprising one or more actives selected from the groupconsisting of: retinoids, hydroxyl acids, depigmenting agents,botanicals, collagenase inhibitors, elastase inhibitors, sunscreens,anti-perspirants, deodorants, anti-bacterias, and anti-fungals.
 13. Thecomposition according to claim 1, further comprising one or morecolorants.
 14. A long-wearing composition for providing extended releaseof fragrance, said composition comprising: (a) from about 0.5% to about5% by weight of a hydrophilically-modified cross-linked siliconeelastomer; (b) from about 0.5% to about 5% by weight of an acrylicrheology modifier; (c) from about 35% to about 50% by weight of apolyol; (d) from about 35% to about 50% by weight of an alcohol; and (e)from about 2% to about 10% by weight of a fragrance oil, wherein thecomposition is capable of releasing said fragrance oil over a longerperiod of time as compared to an otherwise identical composition lackingeither said hydrophilically-modified cross-linked silicone elastomer orsaid acrylic rheology modifier.
 15. A method for providing prolongeddelivery of a fragrance oil comprising applying to a surface acomposition according to claim
 1. 16. The method according to claim 15,wherein said surface is a human integument.
 17. An insect repellantcomposition that provides extended release of an insect repellant oil,comprising: (a) a hydrophilically-modified cross-linked siliconeelastomer; (b) an acrylic rheology modifier; (c) a polyol; (d) analcohol; and (e) an insect repellant oil, wherein the composition iscapable of releasing said insect repellant oil over a longer period oftime as compared to an otherwise identical composition lacking eithersaid hydrophilically-modified cross-linked silicone elastomer or saidacrylic rheology modifier.